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cmd/go: support -buildmode=c-shared on freebsd/amd64 #22078

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whatest000 opened this issue Sep 28, 2017 · 7 comments
Closed

cmd/go: support -buildmode=c-shared on freebsd/amd64 #22078

whatest000 opened this issue Sep 28, 2017 · 7 comments
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FrozenDueToAge OS-FreeBSD
Milestone
Unplanned

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@whatest000
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Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.8.3 freebsd/amd64

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="freebsd"
GOOS="freebsd"
GOPATH="/root/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/freebsd_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build225258924=/tmp/go-build -gno-record-gcc-switches"
CXX="clang++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

build a .so file for my c program
If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

What did you expect to see?

What did you see instead?
@ianlancetaylor ianlancetaylor changed the title -buildmode=c-shared not supported on freebsd/amd64 cmd/go: support -buildmode=c-shared on freebsd/amd64 Sep 28, 2017
@ianlancetaylor ianlancetaylor added this to the Unplanned milestone Sep 28, 2017
@ianlancetaylor
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Would you be interested in looking into this? It may already work, it may just need to be enabled in cmd/go and cmd/link.

@whatest000
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i am interested, what should i do?

@ianlancetaylor
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@whatest000 Thanks. Edit cmd/go/internal/work/build.go and cmd/link/internal/ld/config.go to permit c-shared on the three FreeBSD targets (freebsd-386, freebsd-amd64, freebsd-arm). Edit cmd/dist/test.go (*tester).supportedBuildMode to say that c-shared is supported on those targets. Run all.bash. See what fails.

@DamjanJovanovic
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The relevant code in cmd/go/internal/work/build.go was moved. My bisection revealed it's now in src/cmd/go/internal/work/init.go as of commit 36323e4 on 6 November 2017.

@DamjanJovanovic
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--buildmode=c-shard works in the latest Git. It was fixed by:

commit 88129f0
Author: Tim Wright tenortim@gmail.com
Date: Tue Feb 13 19:00:17 2018 -0800

all: enable c-shared/c-archive support for freebsd/amd64

Fixes #14327
Much of the code is based on the linux/amd64 code that implements these
build modes, and code is shared where possible.

Change-Id: Ia510f2023768c0edbc863aebc585929ec593b332
Reviewed-on: https://go-review.googlesource.com/93875
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

@DamjanJovanovic
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And this bug is a duplicate of #14327.

@ianlancetaylor
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Thanks, closing.

@golang golang locked and limited conversation to collaborators Jul 13, 2019
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@ianlancetaylor @DamjanJovanovic @gopherbot @whatest000